Electric perforating appliance



R. R. CONE,

ELECTRIC PERFORATING APPLIANCE. APPLlCATIONTILED MAR 24, 1919.

1,425,079. I at ted Aug. 8, 1922.

% 6'NVENT0R I IM B Y a I I UNITED STATES PATENT OFFICE. v

RALPH R. CONE, 0F SYRACUSE, NEW

Your; nssmlion r0 IDUIS WILL, or srmicusn, m YORK.

nnrc'rnrc rnrroname mmlmcn Specification of Letters latent.

Patented Aug. s, 1922.

' Application tiled Ian]! 24,, 1919. Serial He. 284,867.

To all whom it may concern: v

Be it known that LRALrn-R. Conn, a

citizen of the United States of America, and

the following,-talen in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to an electric perforating appliance, the object being to elec- I trically puncture the paper simultaneously with the application of the writing fluid, thereto so that the punctures will appear in the line with the writing fluid.

The drawings show a diagrammatic view of an apparatus for carryingout the'object stated,- said apparatus consisting, 11). this instance, of an electrically conducting plate 1--, having a smooth unbroken surface of the same material, upon which one or more sheets wof paper or equivalent material to be written upon is adapted to restfiatwise. v v The means for applying the writing to the paper may be an ordinary fountain pen having the usual metallic pen -2 secured in one end of a tubular handle or reservoir -3- for the writing fluid, the

metallic pen 2 constituting a conductor for permitting the ink" from the reservoir 3- to the surface of the paper -c and also constitutes an electric conductor connected to one end of the wire 4 which extends from and through the interior of the reservoir and outwardly through the upper end thereof, to form a part of a secondary electric c1rcu1t'-5 of a vibrating spark coil --6 having its vibrating member as -7- electrically connected in the secondary circuit'of a transformer 8- which may receive its current from any source of electric energy as an A. C. dynamo electric machine -9-. v

One terminal of the primary winding and also one terminal of the secondary winding of the spark, coil 6- is connected by a wire -10 to the plate 1, the other terminal of the primary winding of said coil being while theother terminal of the secondary winding of said coil is connected by a wire 11-- to one side of the current controller -.12-, the other side-of which is connected to the wire 4- passing throughthe reservoir to the pen point 2,

The cpntroller 12 preferably consists of a parrot jump spark terminals, the distance between which may be varied at will by the operation of a rotarily adjustable cam 13 against which the opposite arms of the contrnller -+1Q are spring pressed under their own tension, it being understood that the cam 13 is made of insulating materialw r :lhe'purpcse of the adjustment of the terof the controller -12- by means of the cam l3 is to enable the o erator to regulate the puncturing effect of t e electric, current according to the number of sheets of paper operated upon since it is possible to The vibrating armature --7- is normally in electric contact with the terminal -14 which is connected by a wire -15 to the secondary coil -16- of the transformer, said coil being also connected by a wire ---W to another terminal 18- which under-l ra one end of the plate -1 opposite that to which the wire -10- is connected.

The plate 1 is yieldingly supported on a spring -19-- which tends to .hold its flee and out of contact with the terminal -l8 but permits'the plate to be pressed into contact with said terminal -1 8 by the weight of the hand thereon or by the pressure of the pen upon the paper resting upon the plate.

It is evident that instead of connecting the 95 the pen point. 7 G now, that it is desired to write indelibly upon the paper -a, the fountain pen is then taken in hand and drawn along and upon the surface of the paper to produce the desired writing or other characters by 105 which operation the free end of the metal plate 1- will be pressed into electrical engagement with the terminal 18 against the action of the spring 19 thus closing the circuit through the primary winding 110 l of the spark coil 6-, and at the same time setting u an induced current in the secondary win ing and thence through the wires -4 and 10 with suflicient electro-motive force'to electrically puncture the paper with a. fre uency directly proportionate to the speed 0 vibration of the armature -7- of the spark coil, it being understood that the continued contact of the plate l with the terminal 18 causes a rapid vibration of the armature -7 and consequent make and break contact with the terminal -14 which produces corresponding frequency of interruption of current between the plate -1 and conductin oint 2.

Under these conditions the movement of the pen across the surface of the paper with the usual speed of writing not only leaves a deposit of the writing fluid upon said surface but also causes the paper to be electrically punctured at more or less regular intervals along the line of and simultaneously with the fluid deposit.

This method of writing indelibly is par ticularly valuable in signin checks and other valuable documents; t e apparatus shown bein particularly simple and ef ficient for t at purpose in that the plate serves as a table or a rest upon which the paper may be placed and together with the fountain pen is all that need be in view.

The remaining parts may be concealed within a suitable'case remote from the plate -1 except that the wire which is connected to the en may be partially exposed when the pen is in use and must be sufliciently flexible to permit the pen to be handled in different ositions.

What claim is:

1. The combination with an alternating current generator and a transformer, of a normally open electric circuit connected to the secondary winding of the transformer and including therein a vibrating spark coil and a bed-plate of electric conducting material in series with the rimary Winding of the spark coil, said p ate constituting a switch member for closing said circuit, and a writing instrument of electric conducting material electrically connected to the secondary circuit of the s ark coil to cooperate with said plate for per crating purposes.

2. The combination with an alternating current generator and a transformer, of a normally open electric circuit connected to .the secondary winding of the transformer and includin therein a vibratin spark coil and a bed-pl ate of electric'con ucting material in series with the primary winding of the spark coil, said plate constituting a switch member for closing said, circuit, a writing instrument of electric conducting material electrically connected to the secondary circuit of .the spark coil to cooperate with said plate for perforating purposes, and adjustable means in the secondary circuit of the spark coil in series with the writing instrument for varying the intensity of the perforating current.

3. In an electric perforator appliance of the character described, a bed-plate of electric conducting material having a smooth unbroken surface of the same material for supporting the sheets to be operated upon, a writing instrument of electric conducting material cooperating with the plate for perforating purposes, and means for supplying current energy tosaid plate and writ ing instrument including a normally open electric switch of which the plate constitutes one member.

In witness whereof I have hereunto set my hand this 17th day of March, 1919.

RALPH R. CONlE.

Witnesses:

E. CHAsn, ANNA G. JORDAN. 

